An air sanitizer unit that includes a housing, a substrate, and a light source. The substrate is provided in an interior space of the housing and includes at least one photocatalytic coating on at least one surface that extends along a flow path of airflow...

An air purifier is provided, including a body (14) comprising a wall (16) defining an interior space (18), a first opening (20) to the interior space, and a second opening (22) to the interior space. The body is a tubular body. An airflow pathway is provid...